It is proper to take alarm at the first experiment on our liberties. . . . The freemen of America did not wait till usurped power had strengthened it… - James Madison

In the first place, I own myself the friend to a very free system of commerce, and hold it as a truth, that commercial shackles are generally unjust, oppressive and impolitic — it is also a truth, that if industry and labor are left to their own course, they will generally be directed to those objects which are the most productive, and this in a more certain and direct manner than the wisdom of the most enlightened legislature could point out.

If Congress can do whatever in their discretion can be done by money, and will promote the general welfare, the Government is no longer a limited one possessing enumerated powers, but an indefinite one subject to particular exceptions. It is to be remarked that the phrase out of which this doctrine is elaborated, is copied from the old articles of Confederation, where it was always understood as nothing more than a general caption to the specified powers, and it is a fact that it was preferred in the new instrument for that very reason as less liable than any other to misconstruction.

Those who are to conduct a war cannot in the nature of things, be proper or safe judges, whether a war ought to be commenced, continued, or concluded. Thy are barred from the latter functions by a great principle in free government, analogous to that which separates the sword from the purse, or the power of executing from the power of enacting laws.